C11112331312111112111133133313331333133313223223313121111331211   >>    C1111233131211111211113313331333133313331322322331312111133121   <<    C11112331312111112111133133313331333133313223223313121111331213   >>      C11112331312111112111133133313331333133313223223313121111331212   >>